package org.outlook.crawler.util;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.Writer;
import java.net.Socket;

import org.apache.commons.httpclient.ProxyClient;
import org.apache.commons.httpclient.UsernamePasswordCredentials;
import org.apache.commons.httpclient.auth.AuthScope;


public class ProxyUtil {
	
	public static void main(String[] args) throws Exception {
		ProxyClient proxyclient = new ProxyClient();
        
        // set the host the proxy should create a connection to
        //
        // Note:  By default port 80 will be used. Some proxies 
        // only allow conections to ports 443 and 8443.  
        // This is because the HTTP CONNECT method was intented
        // to be used for tunneling HTTPS.
        proxyclient.getHostConfiguration().setHost("www.yahoo.com");
        
        // set the proxy host and port
        proxyclient.getHostConfiguration().setProxy("10.0.1.1", 3128);
        
        // set the proxy credentials, only necessary
        // for authenticating proxies
        proxyclient.getState().setProxyCredentials(
                new AuthScope("10.0.1.1", 3128, null),
                new UsernamePasswordCredentials("proxy", "proxy"));
        
        // create the socket
        ProxyClient.ConnectResponse response = proxyclient.connect();
        
        if (response.getSocket() != null) {
            
            Socket socket = response.getSocket();
            
            try {
                
                // go ahead and do an HTTP GET using the socket
                Writer out = new OutputStreamWriter(
                        socket.getOutputStream(), "ISO-8859-1");
                
                out.write("GET http://www.yahoo.com/ HTTP/1.1\r\n");
                out.write("Host: www.yahoo.com\r\n");
                out.write("Agent: whatever\r\n");
                out.write("\r\n");
                out.flush();
                
                BufferedReader in = new BufferedReader(
                        new InputStreamReader(socket.getInputStream(), 
                        "ISO-8859-1"));
                
                String line = null;
                
                while ((line = in.readLine()) != null) {
                    System.out.println(line);
                }
                
            } finally {
                // be sure to close the socket when we're done
                socket.close();
            }
        } else {
            // the proxy connect was not successful, check 
            // connect method for reasons why
            System.out.println("Connect failed: " + 
                    response.getConnectMethod().getStatusLine());
            
            System.out.println(
                    response.getConnectMethod().getResponseBodyAsString());
        }
    }

}
